阅读说明：本技术 一种吸声隔声复合结构 (Sound absorption and insulation composite structure ) 是由 孙黎明 王志鹏 鲍林晓 刘世谦 陈俊杰 齐兵兵 郑志昊 刘方圆 郑占强 邢首辰 于 2021-07-06 设计创作，主要内容包括：一种吸声隔声复合结构,由支撑框、设置在支撑框上的吸声隔声组件以及质量块组成,所述的吸声隔声组件从上至下依次为穿孔板、弹性薄膜和隔声板,所述穿孔板呈圆锥形结构,其上分布有孔,所述穿孔板密封设置在支撑框上端的开口处,所述隔声板密封设置在支撑框下端的开口处,所述的弹性薄膜设置在穿孔板和隔声板之间的支撑框内并将支撑框内的空腔分隔为两个腔室,弹性薄膜和穿孔板之间形成吸声腔,弹性薄膜和隔声板之间形成隔声腔,所述质量块固定设置在弹性薄膜朝向穿孔板的一侧面上。本方案可利用微穿孔技术、薄膜共振及隔声技术,快速、有效的对周围环境中的噪音进行吸声,以实现快速降噪的技术效果。(The utility model provides a sound absorption sound insulation composite construction comprises carriage, sound absorption sound insulation subassembly and the quality piece of setting on the carriage, sound absorption sound insulation subassembly from last to being perforated plate, elastic film and sound insulation board down in proper order, the perforated plate is conical structure, and it is porose to distribute on it, the sealed opening part that sets up in the carriage upper end of perforated plate, the sealed opening part that sets up at the carriage lower extreme of sound insulation board, elastic film set up in the carriage between perforated plate and sound insulation board and separate the cavity in the carriage for two cavities, form the sound absorption chamber between elastic film and the perforated plate, form the sound insulation chamber between elastic film and the sound insulation board, the quality piece is fixed to be set up on elastic film towards the side of perforated plate. The available micro-perforation technique of this scheme, film resonance and sound insulation technique, noise in quick, effectual to the surrounding environment is absorbed the sound to realize falling the technological effect of making an uproar fast.)

1. A sound absorption and insulation composite structure is characterized in that: by the carriage, set up sound absorption sound insulation subassembly and the quality piece on the carriage and constitute, sound absorption sound insulation subassembly from last to being perforated plate, elastic film and sound insulation board down in proper order, the perforated plate is conical structure, and it is porose to distribute on it, the sealed opening part that sets up in the carriage upper end of perforated plate, the sealed opening part that sets up at the carriage lower extreme that sets up of sound insulation board, elastic film set up in the carriage between perforated plate and sound insulation board and separate the cavity in the carriage for two cavities, form the sound absorption chamber between elastic film and the perforated plate, form the sound insulation chamber between elastic film and the sound insulation board, the quality piece is fixed to be set up on elastic film towards the side of perforated plate.

2. A sound absorbing and insulating composite structure as claimed in claim 1, wherein: and round holes with sound absorption function are uniformly distributed on the conical surface and the bottom plane of the perforated plate.

3. A sound absorbing and insulating composite structure as claimed in claim 2, wherein: and circular holes with the same diameter and size are uniformly distributed on the perforated plate.

4. A sound absorbing and insulating composite structure as claimed in claim 1, wherein: the supporting frame is composed of a supporting frame I and a supporting frame II, the elastic film is bonded on the lower end face of the supporting frame I and the upper end face of the supporting frame II, and the supporting frame I and the supporting frame II form an integrated structure.

5. The sound absorbing and insulating composite structure of claim 4, wherein: support frame I and support frame II, all have open-ended cylindrical structure for last lower extreme, and support frame I's radial height is greater than support frame II's radial height.

6. A sound absorbing and insulating composite structure as claimed in claim 1, wherein: the supporting frame I and the supporting frame II are both made of hard materials.

7. The sound absorbing and insulating composite structure of claim 5, wherein: the up end of carriage I is equipped with the step locating surface of mutually supporting with the perforated plate, and the perforated plate is connected at the up end of carriage I and is sealed I upper portion cavity of carriage through sealed glue.

8. The sound absorbing and insulating composite structure of claim 5, wherein: the sound insulation plate is of a flat plate structure and is connected to the lower end face of the support frame II through a sealant, and the lower cavity of the support frame II is sealed.

9. A sound absorbing and insulating composite structure as claimed in claim 1, wherein: the mass block is arranged at the center of the elastic film and is fixed on the surface of the elastic film layer in an adhesive mode.

10. A sound absorbing and insulating composite structure as claimed in claim 1, wherein: the radial height of the perforated plate is smaller than that of the support frame I, and the height difference is larger than that of the mass block.

Technical Field

The invention relates to the technical field of sound absorption, sound insulation and noise reduction equipment, in particular to a sound absorption and sound insulation composite structure.

Background

At present, with the development of times, the living standard is improved, the technological level is increasingly refined, the requirements on noise are higher and higher regardless of civil use or military use, the technology and the cost are increased when the noise is controlled from the source, and the established noise elimination target is not easy to realize. Therefore, it is necessary to add sound absorption and insulation equipment before the propagation path and the final receptor to achieve the noise reduction effect. The existing sound absorption or sound insulation structure has the defects of single function, narrow noise reduction frequency band, heavy weight and the like, and has limited effect on noise.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide a sound absorption and insulation composite structure which has the advantages of simple structure, convenient installation, light weight, wide sound absorption and insulation frequency range and good effect, and can quickly and effectively absorb the noise in the surrounding environment by utilizing a micro-perforation technology and a film resonance and sound insulation technology so as to realize the quick noise reduction effect.

The technical scheme adopted by the invention is as follows: the utility model provides a sound absorption sound insulation composite construction comprises carriage, sound absorption sound insulation subassembly and the quality piece of setting on the carriage, sound absorption sound insulation subassembly from last to being perforated plate, elastic film and sound insulation board down in proper order, the perforated plate is conical structure, and it is porose to distribute on it, the sealed opening part that sets up in the carriage upper end of perforated plate, the sealed opening part that sets up at the carriage lower extreme of sound insulation board, elastic film set up in the carriage between perforated plate and sound insulation board and separate the cavity in the carriage for two cavities, form the sound absorption chamber between elastic film and the perforated plate, form the sound insulation chamber between elastic film and the sound insulation board, the quality piece is fixed to be set up on elastic film towards the side of perforated plate.

As the preferred scheme, the conical surface of perforated plate and evenly distributed have the round hole of sound absorption effect on the plane of bottom.

Preferably, circular holes with the same diameter and size are uniformly distributed on the perforated plate.

Preferably, the support frame is composed of a support frame I and a support frame II, the elastic film is bonded on the lower end face of the support frame I and the upper end face of the support frame II, and the support frame I and the support frame II are integrated into a whole.

Preferably, the support frame I and the support frame II are cylindrical structures with openings at the upper and lower ends, and the radial height of the support frame I is greater than that of the support frame II.

Preferably, the support frame I and the support frame II are both made of hard materials.

As preferred scheme, the up end of carriage I is equipped with the step locating surface of mutually supporting with the perforated plate, and the perforated plate is connected at the up end of carriage I and seals I upper portion cavity of carriage through sealed glue.

Preferably, the sound insulation plate is of a flat plate structure, is connected to the lower end face of the support frame II through a sealant, and seals a lower cavity of the support frame II.

Preferably, the mass block is arranged at the center of the elastic film and fixed on the surface of the elastic film layer by gluing.

Preferably, the radial height of the perforated plate is smaller than that of the support frame I, and the height difference is larger than that of the mass block.

The invention has the beneficial effects that:

this scheme is through optimizing structural design, with the sound absorption sound insulation composite construction of carriage, sound absorption sound insulation subassembly and quality piece design structure as an organic whole, concrete structure is: the sound absorption and insulation component is sequentially provided with a perforated plate, an elastic film and an acoustic baffle from top to bottom, the perforated plate is in a conical structure, holes are distributed on the perforated plate, the perforated plate is hermetically arranged at an opening at the upper end of the supporting frame, the acoustic baffle is hermetically arranged at an opening at the lower end of the supporting frame, and the elastic film separates a cavity in the supporting frame into a closed sound absorption cavity and a closed sound insulation cavity; the structure has the advantages of simple structure and convenient installation. Meanwhile, the composite structure integrally adopts a mode of coupling a micro-perforation technology and a film resonance technology, and circular holes with sound absorption function are distributed on the perforated plate; and the comprehensive sound absorption, sound insulation and noise reduction effects are realized by combining the elastic membrane effect with the elastic thin film layer and the final sound insulation effect of the most vibration insulation plate. The whole structure has light in weight, and the sound absorption sound insulation is effectual, and the wide characteristics of range of application can be quick effectual the noise sound absorption problem of solving different environment to extensively be applicable to the noise reduction sound insulation of making an uproar in each field, the practical function is good.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Reference numerals: 1. perforated plate, 2, braced frame 1, 3, quality piece, 4, elastic film, 5, braced frame 2, 6, sound insulation board, 7, round hole, 8, sound absorption chamber, 9, sound insulation chamber.

Detailed Description

The invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

It should be noted that: unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of the terms "a" and "an" or "the" and similar referents in the description and claims of the present invention are not to be construed as limiting in number, but rather as indicating the presence of at least one. The word "comprise" or "comprises", and the like, indicates that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, but does not exclude other elements or items having the same function.

The utility model provides a sound absorption sound insulation composite construction comprises carriage, sound absorption sound insulation subassembly and the quality piece of setting on the carriage, sound absorption sound insulation subassembly from last to being perforated plate, elastic film and sound insulation board down in proper order, the perforated plate is conical structure, and it is porose to distribute on it, the sealed opening part that sets up in the carriage upper end of perforated plate, the sealed opening part that sets up at the carriage lower extreme of sound insulation board, elastic film set up in the carriage between perforated plate and sound insulation board and separate the cavity in the carriage for two cavities, form the sound absorption chamber between elastic film and the perforated plate, form the sound insulation chamber between elastic film and the sound insulation board, the quality piece is fixed to be set up on elastic film towards the side of perforated plate.

In the scheme, round holes with sound absorption function are uniformly distributed on the conical surface and the bottom plane of the perforated plate.

In the scheme, round holes with the same diameter and size are uniformly distributed on the perforated plate.

In this scheme, the carriage constitute by carriage I and carriage II, elastic film bonds the lower part terminal surface of carriage I and the upper portion terminal surface of carriage II to constitute a body structure with carriage I and carriage II.

In this scheme, carriage I and carriage II, all have open-ended cylindrical structure for last lower extreme, and the radial height that the radial height of carriage I is greater than carriage II.

In this scheme, the up end of carriage I is equipped with the step locating surface of mutually supporting with the perforated plate, and the perforated plate is connected at the up end of carriage I and is sealed I upper portion cavity of carriage through sealed glue.

In the scheme, the sound insulation plate is of a flat plate-shaped structure and is connected to the lower end face of the support frame II through the sealant, and the lower cavity of the support frame II is sealed.

In the scheme, the mass block is arranged at the center of the elastic film and is fixed on the surface of the elastic film layer in an adhesive mode.

In this scheme, the radial height of perforated plate is less than the radial height of carriage I, and its difference in height is greater than the height of quality piece.

The installation positions and connection relationships of the components in this embodiment are described in detail below with reference to fig. 1:

embodiment as shown in fig. 1, a sound absorption and insulation composite structure is composed of a sound absorption and insulation component, a support frame and a mass block 3; the supporting frame is composed of a supporting frame I2 and a supporting frame II 5, the supporting frame and the supporting frame II are of cylindrical structures with openings at the upper ends and the lower ends and are made of hard materials, and the radial height of the supporting frame I2 is larger than that of the supporting frame II 5 and is used for fixing and supporting the sound absorption and insulation assembly;

the sound absorption and insulation assembly is composed of a perforated plate 1, an elastic film 4 and a sound insulation plate 6 which are sequentially arranged from top to bottom, wherein the perforated plate 1 is of a concave conical structure and is arranged on the upper portion of a supporting frame I2, the upper port of the supporting frame I2 is sealed by sealing glue with the supporting frame I2, round holes 7 with sound absorption function are distributed on the conical surface of the perforated plate 1 and the bottom plane of the conical surface, the elastic film 4 is bonded on the lower end surface of the supporting frame I2 and the upper end surface of a supporting frame II 5 by adopting a gluing mode, the supporting frame I2 and the supporting frame II 5 form an integrated structure, the sound insulation plate 6 is located at the bottom of the whole structure and is of a flat plate-shaped structure, and the lower end surface of the supporting frame II 5 is sealed by adopting sealing glue to connect with the lower end surface of the supporting frame II 5, so that the inner cavity structure of the whole supporting frame forms sealing.

In this embodiment, further optimization is performed, the circular holes 7 are uniformly distributed on the tapered surface and the bottom plane of the perforated plate 1, and in order to ensure that the sound absorption coefficients and frequencies of all the circular holes in the composite structure are the same, the diameter sizes of all the circular holes 7 need to be set to be the same, and the size of each circular hole 7 is preferably smaller than 2 mm.

In this embodiment, a cavity surrounded by the perforated plate 1, the mass block 3, the elastic film 4 and the support frame i 2 is a sound absorption cavity 8, and a cavity surrounded by the elastic film 4, the support frame ii 5 and the sound insulation plate 6 is a sound insulation cavity 9;

in this embodiment, the mass block 3 is disposed at the center of the elastic membrane 4 by gluing.

In this embodiment, the radial height of the perforated plate 1 is smaller than the radial height of the support frame i 2, and the height difference is greater than the height of the mass block.

In this embodiment, the elastic film 4 described above is preferably made of a material having elasticity; the perforated plate 1 and the sound insulation plate 6 are made of hard materials.

The invention has the characteristics of simple structure, convenient installation, light weight, wide sound absorption and insulation frequency range, good effect and wide application range. The novel sound absorption and insulation composite structure has the advantages of simple structure, low manufacturing cost and good practical effect.

When the sound absorption and insulation composite structure is installed and used specifically, the perforated plate 1, the supporting frame I2 and the elastic film 4 are connected into a sound absorption cavity 8 in an adhesive mode, the lower portion of the supporting frame II 5 and the sound insulation plate 6 are adhered together, and then the elastic film 4 is adhered to the upper portion of the supporting frame II 5 to form a sealed sound insulation cavity 9. The mass block 3 is adhered to the center of the elastic membrane 4 in the sound absorption cavity 8, thereby forming a complete sound absorption and insulation composite structure, as shown in fig. 1.

It should be noted that while the invention has been described in terms of the above-mentioned embodiments, other embodiments are also possible. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention, and it is intended that all such changes and modifications be covered by the appended claims and their equivalents.